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Highlights
Great Boulder Resources (GBR) completes additional metallurgical testwork at Mulga Bill
High gold recovery rates observed at reduced cyanide levels
Project located in Western Australia, with further test phases underway
Great Boulder Resources Ltd (ASX:GBR), listed on the ASX index, operates within the Australian mining and exploration sector, focusing on gold projects in Western Australia. The company has recently reported outcomes from its second phase of metallurgical testwork at the Mulga Bill Project, a site located within the Side Well Gold Project area. The update follows earlier testing designed to assess gold recovery efficiency under varying conditions.
Testwork Supports Stable Recovery Rates
The second phase of metallurgical testing at Mulga Bill has produced gold recovery rates that remain high even at lower cyanide concentrations. Great Boulder (ASX:GBR) reported that the recovery process sustained strong performance at reduced reagent levels, which may support more sustainable processing techniques. This phase builds upon previous test results, where consistent recovery was observed across a range of grind sizes.
Recovery Stability Across Multiple Parameters
The recent testing indicated that recovery performance remained steady across different processing parameters, including grind size and cyanide concentration. Earlier work demonstrated that the Mulga Bill ore responds efficiently even at coarser grind specifications. These findings reflect ongoing efforts to optimise recovery techniques suited to the site’s geology and processing conditions.
Location and Project Development Context
The Mulga Bill site is located within the broader Side Well tenement package in Western Australia. The region is known for its gold-bearing formations and has been a focus of drilling campaigns aimed at defining mineralised zones. Great Boulder (ASX:GBR) continues to operate across several sites in the Mid West region of the state, with exploration activities aligned to project development milestones.
Project Management and Reporting
Updates regarding the Mulga Bill testwork have been released through the ASX platform, reflecting routine disclosure from ASX-listed entities. These reports typically summarise technical outcomes, project status, and next steps in test progression. The company’s project management approach involves staged testwork to verify ore characteristics and evaluate suitable processing methods.
Focus on Cyanide Reduction Techniques
The recent testwork phase explored the impact of reduced cyanide usage on gold extraction. According to the company’s update, a significant portion of gold was still recoverable even when cyanide concentration was adjusted to lower levels. Such findings contribute to the broader discussion on environmentally conscious extraction techniques in Australian gold mining.
